I am truly amazed at the ruby-throated hummingbird’s memory. For example, studies have revealed rubythroats can remember the locations of every feeder and flower they visit in our yards as well as how long it takes each flower to replenish its supply of nectar. They can even remember the locations of the feeders and flower beds that provided them with food the previous year.
Wow! It must take a truly large brain to accomplish such mental fetes. In truth, the rubythroat’s brain is smaller than a pea. While that is indeed physically very small, comparatively speaking it is larger than our brains or those of any other bird in the entire world. Let me explain.
The hummingbird brain makes up about 4.2 percent of its body weight. This makes its brain is proportionally larger than the brains of all other birds. In comparison, our brains comprise only about 2 percent of our body weight.